port-macppc: Re: Bad performance of bmac (bm0) interface (Rev.1 b&w G3) with 100baseTX?

Subject: Re: Bad performance of bmac (bm0) interface (Rev.1 b&w G3) with 100baseTX?
To: Chris Tribo <ctribo@dtcc.edu>
From: Thor Lancelot Simon <tls@rek.tjls.com>
List: port-macppc
Date: 03/12/2006 21:43:59

On Sun, Mar 12, 2006 at 06:50:07PM -0500, Chris Tribo wrote:
> 
> Similar problem here with a Beige G3. When downloading, packets start  
> ramping up to speed, then the collision light on the switch flashes  
> for a second or so, and then traffic stops for a second or two and  
> then it repeats.

This is a duplex mismatch.  Does bm use the generic MII code?  If it
does, this is symptomatic of a bug in the PHY driver -- unless you
have forced a media setting, which you should never do, unless your
host is connected to a half-duplex-only device.

Thor